Testo 425, thermal anemometer with permanently attached flow probe (Ø probe head 7.5 mm), incl. temperature measurement and telescopic handle (max. 820 mm), battery and calibration protocol.

The compact anemometer, testo 425, with permanently attached thermal flow probe and telescopic handle.

Volume flow is shown directly in the display. Exact volume flow calculation thanks to easy input of duct area.

You can also switch to the current temperature reading. Timed and multi-point mean calculation provide information on mean volume flow, flow speed and temperature reading. Min/Max and Hold function included.

  Temperature, flow and volume flow measurement
  Multi-point and timed mean calculation
  Max/min values
  Hold button to freeze readings
  Display light
  Auto Off function
  TopSafe, the indestructible protective case (optional)
  TopSafe, instrument protection against dirt and knocks